Spent-weft cutter.



' E. H. BALLOU.

SPENT WEFT CUT TEH. APPLICATION FILED AuG.6,191r

Patented July 16,l 1918.

3 SHEETS-SHEET l.

E. H. BALLOU.

SPENT WEFT CUTTER.

APPLlcATloN HLED Aue.6.1911.

Patented July 16, 1918.

3 SHEETS-SHEET 2.

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E. H. BALLOU.

SPENT WEFT CUTTER.

APPLICATION FILED AUG.6| IQI. 1 ,272,600. Patented J uly 16, 1918.

3 SHEETS-SHEET 3.

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EUGENE H. BALLOU, 0F PAWTUCKET, RHODE ISLAND, ASSIGNOR TO DRAPER CORPORA- TION, 0F HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

szeau'fjfweer Curran.

Spiecicaton of Letters Paten-t.

Patented July 16, 1918.

Application filed August 6, 1917'. Serial N o. 184,703.

Yan automatic weft replenishing loom whereinthe shuttle box at the. vreplenishing side of the .loom is brought to a standstill before lthe lay reaches its extreme forward position so that the shuttle is standing stillfduring Ythe time that 'a fresh weft carrier i's being inserted therein, this 'dwell of th'e shuttle and shuttle box being elfected without interrupting the 'regular movements of the lay itself." The present inventionl consists ina spent weft cutter which is particularly adapted for use in the loom described in the said patent. The improved spent weftv cutter is mounted' on the lay and the organization is such that when the shuttle box' is stopped and the lay continues itshforwardfmovement the spent weft cutter is actuated so as to cut the weft extending from the neighboring edge of the warp to the shuttle in the now stationary 'shuttle box. Cooperating with the spent weft cutter is a spent weft clamp which clamps the strand of weft close to the cutter thus rendering certain the cutting action.

The invention is illustrated in the accompanying drawings, whereinY 'i Figui-e 1,fisa-p1anw;fiew parti-y in section of so much of the' l'ayr'and shuttle box as is necessary for anv understanding of thevk present invention, the cutter and clamp being shown. intheir normal idle positions. Fig. 2, isa vertical crossrsection in the plane indicated by the line 2-2 in Fig.- l. Fig. 3, is a verticalcrossfsection in the plane indicated by the line .f5-3 in Fig. 1. Fig. 4.-, is a plan-view' partly in section similarto Fig. l, excepting" that the 'illustrated parts are shown in the position which they occupy when the cutter and clamp are 'at work. Fi.4 5, is a vertical cross section inthe plane inc icated bythe line 5 5 in' Fig. 4*. Fig, 6, in afver'tical section in the plane indicated bythe line 6;(3 in Fig. 5. Y l

'A, is the lay B, is4 the shuttle boxat entrevistarseQffhelonf "Namely the lay andl this shuttle box swing in unison. In case the running weft approaches exhaustion the replenishing in'strilimentalities are set into action; and, as explained4 in the aforesaid patent, the shuttle box B, stops as the lay is moving forward while the lay `continues its forward movement. In Fig. l,

of they accompanying drawings, ythe lay and the shuttle box B, are shown in their normal relative positions. Fig. 4, shows the shuttle box B, in its stopped position while the lay is shown at front centen7 that is to say, at its most forward position. As shown in Fig. 4;, the lay has moved forward relatively to the now stationary shuttle rbox B. In sai-dpatent, there is a complete explanation of ther mechanism for producing this particular result. 4It suliices at the present `time to know that the shuttle box B, at the `'replenishing side of the loom is stopped when a change of weft is called while the .lay continues to move forwardly. This relation between the lay and the shuttle box B, is utilized in accordance with the present invention for the purpose of actuating the spent weft 'cutter and the spent weft clamp.

The spent weft cutter comprises a cutting Vblade C, which, as shown in Fig. l, is integral vvith a hub D, secured to the inner end of a rock shaft E, by a set screw F.l This 'rock shaft E, is journaled in bearings G and H, secured to the rear of the lay. The spent weft cutter is located between the'warp K, and the mouth of the shuttle box B. At its outer end the'rock shaft has a pinion L,

vfast thereon. Cooperating with this pinion is an internal rack M, carried by a lever N, which is pivoted at O, to arearward extension P, of the bearing H. The lower end of this lever has a cani slot Q, in which enters at ally times a stud R, which is fast on the shuttle box. Nhen the shuttle box B, and the lay are moving` in unison, the lever N, occupies the upright position shown in Fig. 3, and the' cutter C, occupies its normal idle position back of the reed, as shown in Fig. 1.

In'the eyent, however, that a change of weft ijsc'alledv bythe approaching exhaustion of theweft lin the shuttle, the shuttle box B, stops whileV the lay continues its forward movement as explained in patent. The re sult is that the stud R, remains still While the pivot'Q, 'or the lever N, moves forwardly to -the position shown in Fig. 4, and hence the lever N, is swung on itsl pivot and the rack M, swings downwardly thus rocking the shaft E, through the pinion L. Hence the spent weft cutter C, .swings forwardly and downwardly to the position shown in Figs. 4 and` 5.

At the close of its downward swing the cutter enters a recess S, in the upper face of the layralongside a stationary shear blade T, located within the recess. Before the cutter C, swings downwardly the shuttle is in the shuttle box B (as indicated at U, in

Fig. 4) so that thereV is a strand of weft V,

extending from the fell of thecloth and overlying the stationary shear blade T, in the path of the cutter; Hence, when the cutter descends it encounters the strand V, of the weft and cuts it. The stationary shear blade T, has an upward and rearward extension lV, at the rear and back of the reed which serves as a guide for the cutter C, during its downward swing. A spring I, surrounding the rock shaft E, and bearing against a collar a, on saidshaft maintains the cutter C, at all times in contact with the blade T, thus insuring the cutting action.`

It is. important that the strand of weft should be clamped close to the stationary shear blade T, at the time that it is cut and for this purpose a clamp X, is employed. This clamp X, is loosely hungy onthe rock shaft'E. It has a broad laterally extending clamping foot Y, against which bears a spring Z, the other end of which is fastened to the hub D, of the cutter, The clamp X,

until the position is reached which is shown in dotted lines in Fig. 2, with the foot of the clamp bea-ring upon the face ofthe lay ralongside of the recess S, and clamping the strand V, of weft. Thereafter, during the further descent of the cutter C, to the position shown in Fig. 5, the clamp maintains its clamping position, the yielding of the spring Z, between the clamp and cutter permitting this independent movement of the cutter.

When the lay again retreats the shuttle box B, remains stationary until the Vtwo are in alinement, when they resume their unison movement as set forth in said patent. During the first part ofthe retreat of the lay and until it reaches alinement with the shuttle box, the lever N, is restored to the normal position shown in Fig. 3, by the stud R, and the rock shaft E, is rocked so as ,to restore the cutter C, and the clamp X, to their normal idle positions, shown in Figs. l, 2 and 3.

Iclaim- Y .Y

l. An automatic weft-replenishing loom wherein the shuttle box at the replenishing side of the loom is brought to a standstill before the lay reaches its extreme forward position preparatory to weft replenishment having, in combination, a lay with a recess in its top between the warp and the shuttle box at the replenishing side of the loom; reed on the lay; a stationary shear blade v*located in said recess; aV rock shaft mounted .weft clamp mounted to turn on said rock shaft and'yieldingly connected with the cutter so that said cutter may be moved farther than the clamp, said clamp being adapted tov clamp a strand of weft againstjthe lay close to the recess therein; a lever pivotally vmounted on-the lay and having an internall .rack engaging said pinion and a cam slot; .and a stud on the 4shuttle box entering said cam slot, whereby said cutter and clamp are ,normally 'maintained idle back of the reed but, when the shuttle box stops, the cutter swings into the slot in the lay and the weft clamp clamps the strand of weft to be cut.

2. An automatic weft replenishing loom wherein the shuttle vbox at the replenishing side of the loom ris brought to a standstill ,before the lay reaches its extreme forward position preparatory to weft replenishment having, in combination, a'lay having a recess in its top between the warp andthe shuttle box at the replenishing side of the loom; a stationary shear blade located in said recess; a rock shaft mounted on the back of the lay having a pinion on its outer end and a cutter on its inner end; a spring acting to maintain said cutter in contact with g the stationary shear blade during the cutting operation; a weft clamp mounted vto turn on saldvrock shaft and yieldingly connected Vwith the cutter so that said cutter may be moved farther than the clamp, said clamp being adapted to clamp a 4strand' of weft Aagainst the lay close to the recess therein; a

lever pivotally mounted on the lay and hav- Ving an internal rack engaging said pinion and a cam slot; and a stud on the shuttle box entering said cam slot, whereby said cutter kand clamp are normally maintained idle but when the shuttle box stops, the forward movement of the lay through action of said stud on said lever-causes said pinion to rotate thereby swinging the cutter forwardly and downwardly into the slot in the, lay and causing n,the weft clamp to. moverfofrwardly and downwardly until it clamps the strand of weft extending from the fell of the cloth to the shuttle against the lay.

3. An automatic weft replenishing loom wherein the shuttle box at the replenishing side of the loom is brought to a standstill before the lay reaches its extreme forward position preparatory to weft replenishment having, in combination, a lay having a recess in its top between the warp and the shuttle box at the replenishing side of the loom; a stationary shear blade located in said recess; a rock shaft mounted on the back of the lay having a pinion on its outer end and a cutter on its inner end; a spring acting to maintain said cutter in contact with the stationary shear blade during the cutting operation; a lever pivotally mounted on the lay and having an internal rack engaging said pinion and a cam slot; and a stud on kthe shuttle box entering said cam slot,

whereby said cutter is normally maintained idle but when the shuttle box stops, the forward movement of the lay through action of said stud on said lever causes said pinion to rotate thereby swinging the cutter forwardly and. downwardly into the slot inthe lay.

4. An automatic weft replenishing loom wherein the shuttle box at the replenishing,

side or" the loom is brought to a standstill before the lay reaches its extreme forward position preparatory to weft replenishment having, in combination, a lay; a rock shaft mounted on the lay having` a pinion and a cutter; a lever pivotally mounted on the lay and having an internal rack engaging said pinion and a cam slot; and a stud on the shuttle box entering said cam slot, whereby saidv cutter is normally maintained idle but when the shuttle box stops, the forward movement of the lay through action of said stud on said lever causes said pinion to rotate thereby swinging the cutter.

An automatic weft replenishing loom wherein the shuttle box at the replenishing side of the loom is brought to a standstill before the lay reaches its extreme forward position preparatory to weft replenishment having, in combination, a lay; a movable cutter on the lay; and actuating means for the cutter connected with the shuttle box so that when the shuttle box stops and the forward movement of the lay continues the cutter moves to cut the strand of weft extending from the fell of the cloth to the shuttle. v

6. An automatic weft replenishing loom wherein the shuttle box at the replenishing side of the loom is brought to a standstill before the lay reaches its extreme forward position preparatory to weft replenishment having, in combination, a lay having a recess in its top between the warp and the shuttle box at the replenishing side of the loom; a stationary shear blade located in said recess; a movable cutter' on the lay; a spring acting to maintain said cutter in contact with the stationary shear blade during the cutting operation; and actuating means for the cutter connected with the shuttle box so that when the shuttle box stops and the forward movement of the lay continues the cutter moves into the slot in the lay and cuts the strand of weft extending from the fell of the cloth to the shuttle.

7. An automatic weft replenishing loom wherein the shuttle box at the replenishing side of the loom is brought to a standstill before the lay reaches its extreme forward position preparatory to weftreplenishment having, in combination, a lay having a recess in its top between the warp and the shuttle box at the replenishing side of the loom; a movable cutter on the lay; a weft clamp mounted on the lay to move with the cutter and yieldingly connected with the cutter so that said cutter may be moved fart-her than the clamp, said clamp being adapted to clamp a. strand of weft against the lay close to the recess therein; and actuating means for the cutter connected with the shuttle box so that when the shuttle box stops and the forward movement of the la'y continues the my name.

EUGENE H. BALLOU.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washingtony D. C. 

